The stromal microenvironment plays a vital role in cancer initiation and progression. We performed a comparative expression profiling of pulmonary MSC derived from NSCLC and corresponding normal lung tissue of 5 newly diagnosed patients. The analysis indicated variable expression of genes involved in DNA repair, apoptosis, proliferation or angiogenesis between NSCLC-MSC and NLT-MSC.
Mesenchymal stem cells in non-small cell lung cancer--different from others? Insights from comparative molecular and functional analyses.
Specimen part, Subject
View SamplesAlternative polyadenylation has been implicated as an important regulator of gene expression. In some cases, alternative polyadenylation is known to couple with alternative splicing to influence last intron removal. However, it is unknown whether alternative polyadenylation events influence alternative splicing decisions at upstream exons. Knockdown of the polyadenylation factors CFIm25 or CstF64 was used as an approach in identifying alternative polyadenylation and alternative splicing events on a genome-wide scale. Although hundreds of alternative splicing events were found to be differentially spliced in the knockdown of CstF64, genes associated with alternative polyadenylation did not exhibit an increased incidence of alternative splicing. These results demonstrate that the coupling between alternative polyadenylation and alternative splicing is usually limited to defining the last exon. The striking influence of CstF64 knockdown on alternative splicing can be explained through its effects on UTR selection of known splicing regulators such as hnRNP A2/B1, thereby indirectly influencing splice site selection. We conclude that changes in the expression of the polyadenylation factor CstF64 influences alternative splicing through indirect effects. Overall design: HeLa cell line was stably transfected with shRNA plasmids targeting CstF64. Total RNA was isolated from CstF64 KD cells and wild-type control cells using Trizol according to manufacturer’s protocols. Samples were deep sequenced in duplicate using the Illumina GAIIx system.
Coupling between alternative polyadenylation and alternative splicing is limited to terminal introns.
No sample metadata fields
View SamplesCell lines play an important role for studying tumor biology and novel therapeutic agents. We demonstrated that cell lines represent a useful and reliable in vitro system for studying basic mechanisms in lung cancer. Moreover, we presented 3 novel, comprehensively characterized SCC cell lines.
Establishment and comparative characterization of novel squamous cell non-small cell lung cancer cell lines and their corresponding tumor tissue.
Specimen part, Disease, Cell line
View SamplesPlants typically contain two different types of cell walls: a primary wall that is being deposited around all growing cells, and a secondary wall that is produced in cells with specialized functions once they have ceased to grow. In Arabidopsis, VND7 is a transcription factor that is sufficient to activate secondary cell wall synthesis. To artificially turn on the secondary cell wall synthesis, VND7 was fused to the activation domain of the herpes virus VP16 protein and the glucocorticoid receptor (GR) domain. Thus, the transgenic plants harbouring the constructs can then be treated with dexamethasone (DEX), a glucocorticoid derivative, to induce the secondary cell wall formation.
A Transcriptional and Metabolic Framework for Secondary Wall Formation in Arabidopsis.
Specimen part, Treatment
View SamplesGene expression profile was analyzed after knockdown of PAEP in lung cancer cell lines 2106T and H1975 as well as in skin cancer cell line MeWo.
Glycodelin: A New Biomarker with Immunomodulatory Functions in Non-Small Cell Lung Cancer.
Specimen part, Cell line, Treatment
View SamplesGene expression in larval, early third instar eye-antenna discs was assessed to reveal an ATF4 contribution to target gene induction following COX7a knockdown. As hypothesised, these COX7a-RNAi induced target genes require the transcription factor ATF4 for induction, irrespective of concomitant Notch pathway activation through Delta over-expression.
ATF4-Induced Warburg Metabolism Drives Over-Proliferation in Drosophila.
No sample metadata fields
View SamplesGene expression in larval, early third instar eye-antenna discs was assesed in genotypes with Notch Gain-of-Function (UAS-Delta or UAS-Notch[intra2]) over-expression or mitochondrial COX7a Loss-of-function (UAS-COX7a-RNAi) or a combination of both (UAS-Delta, UAS-COX7a-RNAi). The analysis revealed that, despite a strong genetic interaction between Notch pathway activation and knockdown of COX7a, no transcriptional cooperation or synergy was detectable in early L3 eye-antenna discs. Rather, COX7a knockdown induced a unique transcriptional signature, which further experiments revealed to be mediated by the transcription factor ATF4.
ATF4-Induced Warburg Metabolism Drives Over-Proliferation in Drosophila.
No sample metadata fields
View SamplesThis SuperSeries is composed of the SubSeries listed below.
Pathways regulating the expression of the immunomodulatory protein glycodelin in non‑small cell lung cancer.
Sex, Age, Specimen part, Cell line, Treatment
View SamplesGene expression profiling of NSCLC tumors with distinct PAEP expression suggested several pathways, which might be involved in the regulation of PAEP/glycodelin expression.
Pathways regulating the expression of the immunomodulatory protein glycodelin in non‑small cell lung cancer.
Sex, Age, Specimen part
View SamplesWe compared H1975 and 2106T cells treated with PAEP/glycodelin expression inducing substances and the corresponding contol treated cells.
Pathways regulating the expression of the immunomodulatory protein glycodelin in non‑small cell lung cancer.
Specimen part, Cell line, Treatment
View Samples